Xcellent Global 4-LED Bright Solar Powered Outdoor Security Motion Sensor Light, Perfect for Yard, Garden,Driveway, Stairs, Outside, Wall, Pathway LD014 Powerful LED solar outdoor light, waterproof and heatproof Activates bright light when inside the 3 metre activation zone No cables, easy to fit Solar panel life span: 5 years - LED Life Span - 50,000 hours How Does It Work? It infraed sensors detect subtle temperature changes caused by movement of people within the selected area of protection,it will light on when someone or something enters its 1-2 meters range within a 120 degree sensing angle.When the motion stops, the lights stay on for approx 10 seconds.